pouter

/ˈpaʊtər/
noun
  1. A person who pouts, or shows displeasure by pushing out their lips.
    • He's known as a pouter in the office, sulking for hours after a disagreement.
    • Don't be such a pouter; just tell me what's wrong.
    • The toddler was a little pouter whenever she didn't get a treat.
  2. A breed of pigeon that can inflate its crop to form a large ball on its chest.
    • At the bird show, the pouter pigeon puffed out its chest impressively.
    • My neighbor raises pouter pigeons and enters them in competitions.
    • The pouter's inflated crop makes it look much larger than other pigeons.
Antonyms
What does "pouter" mean? | whatsthatwordmean | whatsthatwordmean